56 research outputs found

    Güdümsüz derinlik ve hareket kestirmi üzerine detayli bir analiz

    Get PDF
    Recent years have shown unprecedented success in depth estimation by jointly solving unsupervised depth estimation and pose estimation. In this study, we perform a thorough analysis for such an approach. Initially, pose estimation performances of classical techniques, such as COLMAP, are compared against recent unsupervised learning-based techniques. Simulation results indicate the superiority of Bundle Adjustment step in classical techniques. Next, the effect of the number of input frames to the pose estimator network is investigated in detail. The experiments performed at this step revealed that the state-of-the-art can be improved by providing extra frames to the pose estimator network. Finally, the semantic labels of objects in the scene are utilized individually during pose and depth estimation stages. For this purpose, pre-trained semantic segmentation networks are utilized. The effect of computing losses from different regions of the scene and averaging different pose estimations with learnable weights are investigated. The poses and losses corresponding to different semantic classes are summed with learnable weights yielding comparable results against state-of-the-art methods.Derinlik kestirimi konusunda güdümsüz derinlik ve hareket kestirimi yöntemlerinin eşzamanlı eğitimi ile geçmiş yıllarda eşsiz bir başarı sağlanmıştır. Bu çalışmada ise böyle bir yaklaşımın detaylı bir analizi yapılmıştır. Öncelikle, COLMAP [1] gibi klasik yöntemler ile yeni güdümsüz ögrenme tabanlı yaklaşımların hareket kestirimi per formansları karşılaştırılmıştır. Simülasyon sonuçları Demet Düzeltimi tabanlı yöntemlerin üstünlügüne işaret etmektedir. Sonra, hareket kestirimi yapay sinir ağına girdi olarak verilen kare sayısının etkileri detaylıca incelenmiştir. Son teknoloji yaklaşımların fazladan kare saglanarak iyileştirilebileceği bu aşamadaki deneyler ile gös terilmiştir. Son olarak, bir sahnedeki farklı semantik nesnelerden hareket ve derinlik kestirmi sırasında ayrı ayrı yararlanılmıştır. Bu amaçla ise önceden egitilmiş bölüt leme algoritmaları kullanılmıştır. Bir sahnenin farklı semantik sınıflarına ait farklı hareket kestirimlerinin ögrenilebilen katsayılar ile doğrusal kombinasyonunu alma nın etkileri araştırılmıştır. Farklı semantik sınıflara ait olan hareket ve maliyetlerin ögrenilebilen katsayılar ile doğrusal kombinasyonunun alınması ile son teknoloji ile karşılaştırılabilir sonuçlar elde edilmiştir.M.S. - Master of Scienc

    Vücut kitle indeksi ve yaralanma süresinin menisküs tamiri sonrası sonuçlara etkisi]

    Get PDF
    Aim: Our study was to assess the outcome of meniscal repair surgery with anterior cruciate ligament reconstruction, focusing in particular on meniscal healing. Material and Method: We analyzed whether the time elapsed between the injury and the surgery affected the activity scores as measured by the Tegner Activity Scale, Modified Lysholm Knee Scoring, and Barrett criteria. Similarly, we analyzed whether body mass index (BMI) affected the activity scores. Result: The average BMI of the patients was 23.99 +/- 3.64 kg/m2 (range: 19.9-34). BMI was graded as underweight (18.5 kg/m2 or less), normal weight (18.5 kg/m2 to 24.99 kg/m2), overweight (25 kg/m2 to 29.99 kg/m2), or obese (30 kg/m2 to 39.99 kg/m2). Patients were divided into two groups. Overweight and obese patients were included in one group, and patients of normal weight or underweight were included in the other group. Out of a total of 34 patients, 3 (8.8%) were underweight, 20 (58.8%) were normal weight, 9 (26.5%) were overweight, and 2 (5.9%) were obese. Based on the BMI there was no significant difference between the two groups for results of the Tegner Activity Scale, Modified Lysholm Knee Score, and Barrett criteria. BMI of the patients was not a risk factor for the post-operative score scale (P>0.05). There was no significant difference between the injury period (the time elapsed between the injury and the surgery) and activity scores (P>0.05). The injury period had no effect on the post-operative scores. Discussion: BMI of the patients and injury time of the meniscus tear had no negative effect on the functional results of the operation. Meniscal lesions with ACL tear should be repaired when diagnosed

    Ascending aortic coarctation - an atypical location in a non-takayasu arteritis female patient

    Get PDF
    Coarctation of the aorta is a well-known congenital cardiovascular disorder that typically occurs within proximity to the ductus arteriosus. The ascending aorta, distal descending aorta, and abdominal aorta are segments which are prone to development of an atypical coarctation. The etiologies of atypical cases are usually associated with various types of vasculitis syndromes or underlying genetic disorders. In this report, we present a 24-year-old female patient with an ascending aortic coarctation which developed secondary to an atherosclerotic process

    Arthroscopic-Assisted Repair in Full-Thickness Rotator Cuff Ruptures: Functional and Radiologic Results of Five-Year Follow-Up

    Get PDF
    Objective: In our study, we evaluated the post-operative 5-year clinical and radiological results and the ratio of re­current ruptures under magnetic resonance imaging of the patients diagnosed as wide and massive, full-thick­ness rotator cuff rupture and arthroscopic-assisted mini-open rotator cuff repair is applied. Methods: We evaluated the pre-operative and post-op­erative clinical and radiological results of 38 patients with wide and massive, full-thickness rotator cuff rupture and arthroscopic-assisted rotator cuff repair is applied after failure of conservative treatment. Results: Mean post-operative follow-up period was 60.4 months. According to UCLA scoring there were excellent results in 26 patients, good results in 10, and moderate results in 2 patients. According to Constant scoring there were excellent results in 24 patients, good results in 12, and moderate results in 2 patients. 34 of the 38 patients indicated that they were satisfied with the results. The continuity of the rotator cuffs are evaluated with magnetic resonance imaging at the last visits of the patients and there was recurrent ruptures at the 8 patients. Conclusion: Although recurrent rotator cuff rupture rates varies depending on the age of the patients, moderate clinical results are obtained in elder patients. Neverthe­less, despite the rupture rates in the treatment of wide and massive, full-thickness ruptures, satisfactory clinical results can be obtained with arthroscopic-assisted mini-open rotator cuff repair

    Treatment of a patient with congenitally corrected transposition of great arteries associated with ascending aortic hypoplasia and type A interrupted aortic arch without aortic cross clamping leading to myocardial ischemia

    Get PDF
    İnterrupted aortik ark tedavisi karmaşık bir süreçtir. Cerrahi rekonstrüksiyon genellikle myokard iskemisine neden olan aortik kros klempleme, kalbin durdurulması ve hatta kansız operasyon sahası için derin hipotermi gerektirir.Bu yazıda, normotermik şartlarda, kalbi durdurmadan çıkan aort, aortik ark ve proksimal desendan aort replasmanını selektif kanülasyon ve tüm vücut perfüzyonunu sağlayan cerrahi teknik ile tedavi ettiğimiz konjenital düzeltilmiş büyük arter transpozisyonu, tip A kesintili aortik ark ve hipoplazik asendan aortu olan hastamızı sunuyoruz.Treatment of interrupted aortic arch is complex. Surgical reconstruction consists of procedures that cause myocardial ischemia, such as aortic cross clamping, cardioplegia, and hypothermia. In this article, we present a patient with congenitally corrected transposition of great arteries together with Type A interruption as well as hypoplastic ascending aorta and the aortic arch. The replacement of the aorta, aortic arch, and the proximal descending aorta was performed under normothermic conditions without cardioplegia, which was achieved with a technique that preserves the systemic blood supply by using selective cannulation

    Welcome to the December 2023 Issue (Vol:29, No:4) and Current News of the European Journal of Therapeutics

    Get PDF
    Dear Colleagues, In this editorial, we would like to share with you important developments in the European Journal of Therapeutics (Eur J Ther). First of all, as the editorial team, we would like you to know that we hold frequent meetings to benefit our esteemed colleagues and continue to work with great devotion in line with our goal of taking the journal further. We have previously shared with you that we have applied to many indexes. It is with great pleasure that we would like to inform you that in the last few months, more of our index applications have been approved. Index Copernicus, as a result of this application, the ICV 2022 value of our journal was determined to be 100 (approved 2023-10-31) [1] BASE (Bielefeld Academic Search Engine) (approved 2023-11-30) [2] Sherpa Romeo (approved 2023-09-27) [3] MIAR (approved 2023-10-16) [4] All indexes in our journal are currently included on the journal web page [5]. As the editorial team, we would like to inform you that we have determined a policy on this issue for our journal [6], taking into account the recommendations of important international ethics committees such as the Committee on Publication Ethics (COPE) [7] and the World Association of Medical Editors (WAME) [8], which have recently become a trendy topic of discussion about AI chatbots and academic studies prepared with the support of such tools. As you know, when our journal was founded in 1990 [9], it was published in two yearly issues. It is an essential responsibility for us to carry our journal, which continued its publication life with three issues a year in 2009 [10] and four issues a year in 2014 [11]. With your valuable support, we would like to announce that we will increase our journal to 6 issues a year as of 2024 (February, April, June, August, October and December) with the rapidly growing progress of our journal. Unfortunately, we cannot share the names of the referees who made significant contributions to our journal in 2023 due to the changes in the article submission interface during the year and the inaccessibility of some data in the previous interface. However, we would like to emphasize again that we are grateful to all of them for their valuable contributions. Moreover, to expand our journal's referee list, we would like to remind you that competent academics who volunteer in this regard can fill out the “Become a Reviewer for the European Journal of Therapeutics” form [12]. Finally, we would like to point out that we have strengthened our editorial team with an academician competent in dentistry, Fatih Sari, DDS, PhD. Fatih Sari, DDS, PhD, is a new Editorial Board Member of the Eur J Ther. Dr. Sari is an Associate Professor in the Department of Prosthodontics at the Gaziantep University Faculty of Dentistry. He is a Vice Dean of the Faculty of Dentistry and Head of Clinical Departments. Dr. Sari is a prosthodontist and a member of the Turkish Dental Association. He has experience in implant-supported fixed prostheses, Cad/Cam applications and dental materials. We look forward to being able to offer you a large number of high-quality and valuable articles over the coming year. In addition, we would like to thank the readers, authors and reviewers of the Eur J Ther for their continuous support. Sincerely yours

    Turner syndrome and associated problems in turkish children: A multicenter study

    Get PDF
    Objective: Turner syndrome (TS) is a chromosomal disorder caused by complete or partial X chromosome monosomy that manifests various clinical features depending on the karyotype and on the genetic background of affected girls. This study aimed to systematically investigate the key clinical features of TS in relationship to karyotype in a large pediatric Turkish patient population. Methods: Our retrospective study included 842 karyotype-proven TS patients aged 0-18 years who were evaluated in 35 different centers in Turkey in the years 2013-2014. Results: The most common karyotype was 45,X (50.7%), followed by 45,X/46,XX (10.8%), 46,X,i(Xq) (10.1%) and 45,X/46,X,i(Xq) (9.5%). Mean age at diagnosis was 10.2±4.4 years. The most common presenting complaints were short stature and delayed puberty. Among patients diagnosed before age one year, the ratio of karyotype 45,X was significantly higher than that of other karyotype groups. Cardiac defects (bicuspid aortic valve, coarctation of the aorta and aortic stenosi) were the most common congenital anomalies, occurring in 25% of the TS cases. This was followed by urinary system anomalies (horseshoe kidney, double collector duct system and renal rotation) detected in 16.3%. Hashimoto’s thyroiditis was found in 11.1% of patients, gastrointestinal abnormalities in 8.9%, ear nose and throat problems in 22.6%, dermatologic problems in 21.8% and osteoporosis in 15.3%. Learning difficulties and/or psychosocial problems were encountered in 39.1%. Insulin resistance and impaired fasting glucose were detected in 3.4% and 2.2%, respectively. Dyslipidemia prevalence was 11.4%. Conclusion: This comprehensive study systematically evaluated the largest group of karyotype-proven TS girls to date. The karyotype distribution, congenital anomaly and comorbidity profile closely parallel that from other countries and support the need for close medical surveillance of these complex patients throughout their lifespan. © Journal of Clinical Research in Pediatric Endocrinology

    Post-discharge heart failure monitoring program in Turkey: Hit-PoinT

    Get PDF
    Objective: The aim of this study was to assess the efficacy and feasibility of an enhanced heart failure (HF) education with a 6-month telephone follow- up program in post-discharge ambulatory HF patients. Methods: The Hit-Point trial was a multicenter, randomized, controlled trial of enhanced HF education with a 6-month telephone follow-up program (EHFP) vs routine care (RC) in patients with HF and reduced ejection fraction. A total of 248 patients from 10 centers in various geographical areas were randomized: 125 to EHFP and 123 to RC. Education included information on adherence to treatment, symptom recognition, diet and fluid intake, weight monitoring, activity and exercise training. Patients were contacted by telephone after 1, 3, and 6 months. The primary study endpoint was cardiovascular death. Results: Although all-cause mortality didn't differ between the EHFP and RC groups (p=NS), the percentage of cardiovascular deaths in the EHFP group was significantly lower than in the RC group at the 6-month follow up (5.6% vs. 8.9%, p=0.04). The median number of emergency room visits was one and the median number of all cause hospitalizations and heart failure hospitalizations were zero. Twenty-tree percent of the EHFP group and 35% of the RC group had more than a median number of emergency room visits (p=0.05). There was no significant difference regarding the median number of all-cause or heart failure hospitalizations. At baseline, 60% of patients in EHFP and 61% in RC were in NYHA Class III or IV, while at the 6-month follow up only 12% in EHFP and 32% in RC were in NYHA Class III or IV (p=0.001). Conclusion: These results demonstrate the potential clinical benefits of an enhanced HF education and follow up program led by a cardiologist in reducing cardiovascular deaths and number of emergency room visits with an improvement in functional capacity at 6 months in post-discharge ambulatory HF patients.Türk Kardiyoloji Derneği Kalp Yetmezliği Çalışma Grub
    corecore